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 ###Instrução: Qual canal original está associado ao Canal 9 da Montanha B?
 ###Tabelas: CREATE TABLE calculations (calculations_id AUTO_INCREMENT PRIMARY KEY, Level INT, Shuttles INT, Cumulative Shuttles INT, Speed (km/h) VARCHAR, Shuttle Time (seconds) VARCHAR, Total level time (s) VARCHAR, Distance (m) INT, Cumulative Distance (m) INT, Cumulative Time (min and seconds) VARCHAR) CREATE TABLE media (media_id AUTO_INCREMENT PRIMARY KEY, Translator Call Letters VARCHAR, B Mountain Channel VARCHAR, Laurel Mountain Channel VARCHAR, PSIP VARCHAR, Station Call Letters VARCHAR, Network Affiliation ID VARCHAR, Original Channel VARCHAR, Signal Quality VARCHAR) CREATE TABLE power_stroke_diesel_200 (power_stroke_diesel_200_id AUTO_INCREMENT PRIMARY KEY, Pos. INT, Car # INT, Driver VARCHAR, Make VARCHAR, Team VARCHAR) CREATE TABLE weekly (weekly_id AUTO_INCREMENT PRIMARY KEY, Episode VARCHAR, Air Date VARCHAR, Timeslot VARCHAR, Households (Rating/Share) VARCHAR, 18-49 (Rating/Share) VARCHAR, Viewers (m) INT, Weekly Rank (#) VARCHAR) CREATE TABLE past_board_members (past_board_members_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Chairman VARCHAR, Artistic Director VARCHAR, Performance Liaison VARCHAR, Secretary VARCHAR, Business manager VARCHAR, Production Stagemanager VARCHAR, Dramaturge VARCHAR, Public Relations VARCHAR, First/Second Year Rep. VARCHAR, Male Rep. VARCHAR)  
SELECT Original Channel FROM media WHERE B Mountain Channel = 9